http://www.cocos2d-x.org/boards/20/topics/9696Why we moved from JavaScriptCore to SpiderMonkey?

My name is Rolando and I've been working on the cocos2d-x-javascript bindings for a while. We (Zynga) released as open source the branch old-js-bindings, that was using JavaScriptCore last week and right now we're openly working on a new, better, improved, faster, javascript bindings using SpiderMonkey.

Apparently everyone is using JavaScriptCore, but although that seems to be true, they are all infringing the LGPL license (actually Apple is infringing the License), so we searched for other JavaScript VMs and decided that SpiderMonkey was a good candidate.

https://developer.mozilla.org/en/docs/SpiderMonkeySpiderMonkey is Mozilla's JavaScript engine written in C/C++.